48 DKYMJEUS, MEXICO AND CENTRAL AMERICA. 



banded obscurely with brown. Spire conic, the apex a little obtuse, 

 suture irregularly impressed. Whorls 5-^, a little convex, the em- 

 bryonal 1-J smoothish, pale fleshy-brown, the last whorl a little longer 

 than the spire, obscurely three-banded with brown. 



Aperture subovate, shining and fleshy-white within, vividly show- 

 ing the external bands; peristorne a little expanded, milk white, the 

 margins separated ; columella somewhat twisted inside, reflexed, di- 

 lated, partly closing the perforation ; basal arid outer margins a little 

 reflexed, the outer narrowing toward its insertion. 



Alt. 32, diam. 15; length of aperture scarcely 17 mill. (G. # F.) 



Near the city of Orizaba (Botteri.). 



Bulimulus (Drymceus) botterii, CROSSE & FISCII. in Journ. de 

 Conch, xxiii, p. 52 (1875); Miss. Scient. Mex., Mollusca, i, p. 487, 

 pi. 24, fig. 10, 10 a Strebel, Beitr. Mex. Land- und Stissw.- 

 Conch. v, p. 63 Bulimus botterii PFR. Monogr. Helic. Vivent., viii, 



p. 61 Bulimus sulcosus, form A (part), STREBEL, loc. cit. p. 61, 



pi. 6, fig. 17; form B, p. 62, pi. 5, fig. 4 (teste Martens) Otostomus 

 sulcosus var. botterii MARTENS, Biol. Centr. Amer. Moll., p. 208. 



Considered a variety of D. sukosus by von Martens; but it seems 

 to differ in the fine spiral sculpture, which is wanting in sulcosus. 



D. SULCOSUS (Pfeiffer). PL 10, figs. 59, 60, 61, 62, 63. 



Shell oblong-conic, perforate, solid and strong; opaque-bluish, or 

 fleshy- white, frequently clouded longitudinally with reddish-brown on 

 the spire, and sometimes showing faint traces of three wide bands on 

 the last whorl. Surface lustreless, deeply, coarsely and irregularly 

 wrinkled, the spire smoother, conic, apex with typical Drymaeus 

 sculpture, whorls 6-6^, convex. 



Aperture ovate or squarish-ovate, pinkish-purple within, moderately 

 oblique ; peristome blunt, whitish, someAvhat expanded, columeliar 

 margin reflexed above; columella nearly straight above, and white, 

 or with the parietal wall, purple-tinted. 



Alt. 33 J, diam. 17, length of aperture 16 mill. 



Alt. 42, diam. 17J, length of aperture 20J mill. 



Central Mexico : near the city of Mexico (Boucard, Hahn); valley 

 of Mexico (Bourgeau); Tacubaya (Hegewisch); summit of the Sierra 

 de las Aguas Escondidas, at an elevation of 9500 feet above the sea 

 (H. H. Smith); Tuxpan (Strebel), Soledad, State of Guerrero (H. H. 



